Pipe pushing tool



Dec. 18, 1934. J. P. KoENlG PIPE PUSHING TOOL Filed Nov. 1, 1955 Patented Dec. 18, 1934 i UNITED STATES PATENT: oFFicE f PIPE PUsmNG Toor. Joseph vllfitexj-,Koenig', Kalamazoo, Mich.k Application November 71, 1933', Serial No. 696,647

s olaiins.` (C1. 25449-29) This invention relatesto toolsvfor placing pipes ing of a. pipe from said main to said house in near' for conducting gas, water and other fluidsgelecproximity thereto, andthe soil through which tric wiring etc: bymeans of forcing said Apiping pipe was to be placed was` gravel or loose loam, through the ground. Y f l or a mixture of the two, or equivalent material,

An object of the invention is to more readily and the house above. referred towas standing on 5 facilitate the placing of underground tubular a basement or cellar .wall as shown in Fig. 1, in conduits, for connecting with pipes, mains, or which instance, afholeas 5, is made in the wall other-sources whereinza junction of the partsy is E, near the bottom .thereof and to oneside ofthe to be effected. w center ofthe excavation. This excavation, or

An important vobject of :the invention is to propit should be of a size sufficiently large to permit 10 vide means whereby'excavating, for the'most afwo'rkman to. stand andoscillate, or work the part, trenching for.` the laying of pipe, the uproothandle member 1, of the tool, backend' forth. as ing of. shrubbery, and. despoiling ofy lawns and the dog, is advanced with the pipe D, it being flower beds caused by excavating and its attendunderstood that said dog. is to be slid back to a ant litter will'be eliminated and whereby expense Working position by hand, after a forward Work'- 15 for trenching and replacement of debris will be ing thrust of' said handle has been made thereeliminated. A against..l The -handle member aforesaid projects Another object of the invention is to more from a cross-bar or plate 6. This plate-jat its readily and quickly place a line of piping for the center and underk side, has la retaining guard 7,

purposes outlined than has heretofore been acthe major portion of which, lies parallel with said 20 complished. These and other objects and adplate, its ends being bent-to engage the plate and vantages will be more fully comprehended by riveted or otherwise attached thereto. The han-v artisans in general, and by trenchmen, pipe setdle aforesaid is tted through a center hole of the ters, and plumbers in particular when taken in plate and seats on the guard aforesaid, the main connection with the accompanying drawing, object of the plate being to form a locating seat 25 wherein, Fig. 1 shows a section Aof a working .exfor said handle to be operated from. Near each cavation next to a basement or cellar wall, and end of the plate a hole is formed and carried in a longitudinal view of a pipe section with my imthese holes anchor spikes 2 are placed. Preferproved pipe pushing tool in operative position, ably, these spikes are formed with shoulders 8,

? the arrow indicating the movement of the tool which abut the bar or plate 6, from its under side 30r and pipe. to assist in keeping the assembled parts in proper t Fig. 2 is a cross-section of a slightly modied relation with one another when in working posiform ofthe tool. tion. In Fig. 4 is shown a modification of the Fig. 3 is an assembled perspective ofthe tool. spikes, in which, said spikesvhave slightly flat- 35.y Fig. 4 is aside view of the assembled tool partly tened heads for preventing the same from be- 35 in section. coming detached from the plate 6, when the tool Fig. 5 is a cross-section of a pipe with my pipe is being operated in very loose ground, asby the gripping dog attached, the dotted lines at the broadened surface of the plate resting on the botupper portion, indicating an upper hinged jaw of tom of a pit or excavation, the tool is precluded the dog elevated to release the pipe, and it also from settling beyond a working position, and 40 shows the clip link, in dotted lines, moved to reeven so, it requires very little attention at the lease said upper jaw, and Fig. 6, is a plan view hands of the operative to retamp the earth beof the dog attached to a pipe. neath said tool and proceed with his work. A

In the drawing like marks of reference refer to slightly modified form of the tool is shown in Figcorresponding or equivalent parts in the diiferure 2 wherein the handle 1 is provided with a 45 ent views, in which, A represents an excavation pointed end while the rest or guard plate 7 is in a body of earth B, with C designating the bot-y provided with a relatively small .opening in comtom of said excavation, adjacent which is the parison to the opening in the bar 6, so that the cellar wall E, and D a pipe, the latter of which, pointed end of the handle can wedge into the in Fig. 1, is being forced through said earth by plate 7 after insertion through the bar 6. 50 means of my improved pipe forcing tool. So far, I have described the construction of the Assuming that it was desired to install a hytool for forcing the dog and its attachment with drant, bath fixture or other apparatus necessitata pipe into the ground, I will now set forth the ing flowing water intoahouse fromamain source construction and operation of the improved dog 5 of supply, and to do so would necessitate the layused in connection with the pushing tool. 55

This dog comprises two curved members 9 and 10, hinged near their curved portion on a pintle 11, one of the members having two ears 12, the other member seating therebetween, as shown in Fig. 6. The member 9 is somewhat longer than its hinged member 10, and at its free end is provided with oppositely disposed lugs, or stops 13, which are for the purpose of preventing the locking link or band lll, from dislodgement from said dog. This link, when the dog is folded to encompass a pipe as shown in Figs. 5` and 6, is moved forward or toward said pipe, to engage both wings of said dog and prevent its curved jaws from opening when the dog is in operative position about a plpe.

The hinged members of the dog, may be rectangular in cross-section, or may be made to deviate therefrom, as expedient, and in operative practice it is not necessary that the members tightly impress a pipe to which it is attached, in as much as when leverage is brought to bear against the folded together ends between the clip, or link 14, and the pipe being pushed into the ground, the angularity of the dog on the pipe caused by said pushing strain will cause diagonally opposite portions of said dog to bite the pipe sufiiciently tight to carry the pipe along with the same, a relinquishing of stress against said dog, permitting the same to be brought rearwardly and into working position again, the process, together with impressing the handle member of the tool aforesaid, against said dog being repeated, until the pipe is forced to a position where desired, the dog being disposed on the pipeto the right of the plate 6 in Figure 1 so that the pressure against the same by the plate being forced against the saine will cause the necessary driving action of the pipe through the earth.

As shown, the pipe at its forward, or driven end, is fitted With a rectangular elongated plug 16. Experience in forcing piping through various soils, in the manner hereinbefore set forth, has proven that to get a straight, or nominally straight course with a pipe, a square sectioned plug with a blunt end effects a better result than with plugs having sharp, or beveled points, for the reason, that Where small obstructions are encountered in the soil with a square ended plug, said plug will gradually force said obstruction to one side without deflecting the course of said plug and its attached pipe, whereas, with points of vvarious sharp or beveled ends, such points are apt to be deiiected from a straight course and lead the pipe to which they are attached to one side, and often times signally fail to accomplish the desired end.

It will be observed that Figure 2 is slightly different in construction from Figures 3 and 4 in that the handle 1 is tapered at its lower end and not only extends through the plate 7 but also into an opening in the guard plate '7. The tapered ends are preferably wedged in the openings in the guard plate 7.

From the foregoing description, taken in connection with the accompanying drawing, a more extended explanation of the uses, objects, and advantages of my inventionis believed to be unnecessary.

Having therefore described my invention, what I claim as new and desire to secure by Letters Patent is:-

1. In a device of the class set forth, a crossbar having alined holes therethrough, a handle member removably mounted in a central hole of said bar, a guard disposed below said central hole and secured at its ends to said bar, said handle member adapted to rest on said guard when located in said central hole, spikes disposed on each side of said handle member from the opposite side of said crossbar.

2. In a device of the class set forth, a metallic crossbar rectangular in cross section and provided with three alined holes central of its broad er dimension, a guard depending from said bar below a central hole thereof, a handle member portably mounted in said central hole and seating on said guard, spikes having extensions at their upper ends and formed with shoulders adapted to abut said bar from its under side and opposite said handle when said extensions are placed into the other of said holes.

3. A pipe driver comprising a handle, a cross bar at one end of the handle, and a pair of ground-engaging spikes projecting from said bar and upon which the bar and handlev can fulcrum in engaging and driving apipe.

4. A pipe driver comprising a handle, a cross bar at one end of the handle, a pairof groundengaging spikes projecting from said bar and upon which the bar and handle can fulcrum in engaging and driving a pipe, and means slidably connecting the spikes to said bar.

5. A pipeA driver comprising a handle, a cross bar at one end of the handle, and a pair of ground-engaging spikes projecting from said bar and upon which the bar and handle can fulcrum in engaging and driving a pipe, said bar being provided with an intermediate opening for removably receiving Vthe end of the handle, and a guard plate secured to the bottom of the `bar and against which the said handle end can engage.

JOSEPH PETER KOENIG. 

